Advertising device



Mar, 6,

S. B. LANGHAM ADVERTISING DEVICE Filed Feb. 26, 1921 3 sheets sheet l Lagllam Mar. 6, 1923. 1,447,873 s. B. LANGHAM ADVERTIS ING DEVI GE Samue LangI/am tbocnoaj I Mar. 6, 1923.

S. B. LANGHAM ADVRTISING DEVICE 3 sheets-.sheet 5 Filed Feb. 26, 1921 31a/vento@ ,Samuelllanglam Patented aro 6, 123.

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thai-aie ADVERTISING DEVICE.

Application led February 26, 1921. Serial No. 448,031.

To all 'whom 'it 'may concer/n.' l

Be it known that I, SAMUEL B. LANGHAM, a citizen of the United States, residing at Nashville, in the county of Davidson and State of Tennessee, have invented certain new and useful Improvements in' Advertising Devices, of which the following is a specification.

My said invention relates to an advertising device 'and it is an object thereof to provide mechanism which shall be operated by clockwork in a regular and positive 'manner to exhibit a series of pictures or other ad vertising matter. 1t is a further object of my invention to' provide means for auto-- matically reversing the device to repeat the exhibition of advertising matter in a reverse order and in continuous succession until the clockwork runs down.

Referring to the accompanying drawings which are made a part hereof and on which similar reference characters indicate similar parts,

Figure 1 is a front View of the clockwork in my improved` device,

Figure 2, a rear view thereof,

Figure 3, a plan of the entire device showing the clockwork in position,

Figure 4 a section on line 4-4 of Figure 3, andy Figure 5 a sectional view illustrating a modification of my invention.

In the drawings reference character 10 indicates a web adapted to be wound back and. forth between two drums 11 and 12 whose heads only appear in the drawings. The shafts or gudgeons of these drums are journaled in bearings on the frame 13. Drum 12 is driven by a sprocket chain 14 passing over sprocket gears on its shaft and on a driving shaft mounted in the casing 15 of the clockwork. A weight 16 is enclosed in a compartment 17, this weight being carried by a cord or cable 18 adapted to be wound on the shaft of drum 12 as the web unwinds therefrom and vice versa. At'the other end of the casing is a second weight 19 suspended by a cord 20 and adapted to be wound on the shaft of drum 11 as the web unwinds from the drum and vice versa. These cords with their attached weights serve to keep the web taut as the drums are driven back and forth and in the present embodiment the `weight 16 is made heavier than the weight 19 so as to act in effect as a weight motor for wind-ing the web on drum 12 as it islet 0E from drain 11 .the action of the clockwork being thus assisted. y

The casing 13 has a door 21 hinged thereto i at 22 and frictionally held in closed position by means shownat 23, said door carrying a pane of glass or other transparent material f 24 through which the advertising matter on the web 10 may be viewed.

The shaft 25 which drives sprocket chain 14 by a sprocket gear 26 is reversibly driven by means of a pair of beveled pin-ions 27 and 28 fixed thereon and adaptedto engage alternatelywith a bevel pinion 29 on a shaft 30 carrying at its opposite end a disk 31 with a high part at 32 forming a locking lug for holding the shaft against rotation. A gear 33 indicated in dottedy lines is fast on the shaft 30 and a spring motor 34-is geared to yshaft 30hy a gear train` includingA gears 35, 36, 37 and 33, the spring motor exerting a constant effort to drive the shaft 30.

The means for reversing the direction of drive and for controlling the action of spring motor 34 will now be described. A second spring motor 38 is connected by a train of gearing comprising gears39, 40, 41, 42 and 43 (all in dotted lines) toa shaft 4,4

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to drive the same. An escapement compris ing a balance wheel 45, a pawl 46, a ratchet 47 and gears 48, 49,- 50 and 51, the last men# ticned gear meshing with gear 41, controls the action of the spring motor 38 in a conventional manner.

The shaft 44 carries a wheel 52 and this wheel has lugs adapted to strike a lever 53 pivoted at 54 and held in placevby spring 55. The movement of the lever due to the action of the spring is adjustably limited by a set-screw 56 at its opposite end. The lever 53 carries a pivoted pawl 57 held by a spring At the Opposite end of shaft 44 from wheel 52 is a disk 65 having a notched periphery. A pair of detents 66 and 67 i engage the periphery of the disk and have springs 68and 69 attached thereto,

respectively which force one end 0f each detent toward dislr 65 so that .they Will `fall quickly into thenotches of the Wheel When the notches are positioned to receive them. At `their rear `ends thedetents are provided With means to engage the lug 32 of disk 31. 1

The teeth of dislr 65' are so placed that the shaft 30 can be rotated only When gear 29 is fuly engaged with one of gears 27 and 28 5' or conversely, the lugs on Wheel 52 bear such relation to the teeth of disk 65 that lever '63 can be moved to reverse shaft '25 only when shaft 30 is held from rotationyby detent 66 or 67.

Various modifications of my device will suggest vthemselves'to those skilled in the art, and I do not limit myself to the specific form shown in the drawings, .the true scope of the invention being shovvn kby the appended claims.

'las an instance of such modificatioin l may place the clock above the upper roller as shoivn in Figure 5 at l5. The chain lll connects the roller as in the prior modification to the upper roller. A glass ivindonT or door 24" is placed at the back of the casing and both sides 0f the paper cannow be used for advertising. both sides being illuminated if the'device is to be used at night. Other changes in size, form and relation. of parts, etc., Will occur to the sliilled mechanic Within the scope of my invention.

The relation of parts is such that the Wheel 52 Will make one revolution per hour and as it carries live lugs it Will move the ratchet 59 through parts 53 and 57 once in each twelve minutes. llllhen this occurs the shaft 25 'will move 'either to the rightor left to reverse its movement and the web which has been Wound on one drum Will novT be un- Wound from that drumv Vand tvound on the other. As the shaft 44' rotates the levers 66 and 67 alternately fall into the notches on disk 65." `il'sshoivn in Figure 2 lever 67 is holding shaft 80 against rotation and when this lever drops into a notch the other lever will be on' a high place of the disk 65. Disl 3l' being released by lever 67, shaft 30 Will make one-half revolution when the lug will 'catch on the projection of lever 66, the movement of shaft 30 and parts driven thereby gi'iiing vveb' 'l0 a quick movement of sufficient length vto change the sign and then holding it stationary until'theflever '66 is-loivered to life'leas'e lug 32', by vvhi'ch time lever 67 is in engaging' position. Preferably l provide disk'G' with sixty teeth so that the Wheel 3l Will be released at intervals of one-half minutebutthe number vof teethmay be varied accordinfto' thelengthnfthe film to bee'x'- libited'or 'inaccordance With the length of t is desired 't'liatwan' individual' adverllllhen the shaft alhas made one-ifth of a revolution; that is, when the device has run about twelve minutes in one direction it Will bereversedand run forltivelve minutes in the opposite' vdirection as ."heretofore explained. To prevent any retrograde movement or back lash of the shaft 44: whereby the sequence of operations might be disturbed l provide a lmultiple pavvl arrangement ZO near disk 65 having Qapluralityof paivls of varying length, one ofwhich vvill always be in position to engage atootlrof wheel 65.

Having thus fully described my said invention, lwhat l claim as n'eifv and desire to secure by Letters Patent, is:

l. ln a changeable exhibitor, a plurality of drums and means for Winding "a ivebibacl; and forth from one tothe other comprising a shaftt a spring motor for driving the same, means for reversing the movement of lsaid shaft, means for driving the shaft intermittently and a second spring motor connected to operate the reversing means1 substantially set forth. i

ln a changeable exhibitor, aplurality of drums and means for Winding -a jtveb back and forth from one to the'other comprising a driving shaft, a sccondshaft geared to drive the first shaft reversibly in opposite directions, a constantly acting motor to drive the second shaft and means to interrupt the movement of the second shaft including a pair of detents adapted to hold the shaft from rotation and means for alternately disengaging said detente, substantially as set forth.

3. ln a changeable exhibitor, a plurality of drums and means for Winding a Web back and forth from one to the other comprising a driving shaft, a second shaft arranged. to drive the first shaft reversibly in opposite directions, a constantly acting motor to drive the second shaft and means to interrupt the movement of the second shaft including a pair of detents engageable alternately 'with the shaft and means driven by a Aconstantly acting motor for alternately disengaging said detents, substantially as set forth.v

ll. ln a changeable exhibitor, a pair of drums and a web adapted to be Wound back and forth from one to the other rand means for maintaining the Web in taut position comprising a pair of Weights, a cord attachedl to each Weight and also attached lto the shaft of a drum to be vWound thereon as the web is unvvound, substantiallyV as set forth.

5. ln a changeable exhibitona drum and means for Winding a web thereon comprise ing a shaft, a 'spring motor for driving, the sha-fa a disk on theshaft having a Y lug and a pair` of oppositely located detentsadapted to engage said'lugin alternationgandautomatic means to release said ,detents Yaftera Sie Lievens predetermined interval of time, substantially as set forth.

t3. ln a changeable exhibitor, a drum and means for winding a web thereon comprising a shaft, a spring motor for drivingthe shaft, a dish on the shaft having a lug and a pair oppositely located detente adapted to engage said lug in alternation, automatic means to release said detente after a predetermined interval of time, a notched wheel acting on said detente to release them alternately 'from said disk and motor operated means for driving said -Iwheel, substantially as set forth.

7. in a changeable exhibitor, a drum and means for driving the same comprising a shaft, a pair of detente, means on the shaft adapted for alternate engagement by the detente and means for successively releasing t the expiration of predetersaid detents at mined times of equal length, substantially as set forth.

8. in a changeable exhibitor, a drum and means for driving the drum comprising a shaft, a pair of detents and means on the shaft adapted for alternate engagement by said detente, a disk having projections to engage and release said detente, means to drive said disk in one direction and means to prevent retrograde movement thereof, substans tially as set forth.

9. ln a changeable exhibitor, a pair of drums` a web adapted to move from one to the other and means for driving the same comprising a shaft having a pair of pinions, a second shaft having pinion adapted to mesh a ternately with the first pair, means for driving the second shaft and means for moving the first shaft to engage said pinions alternately7 with the pinion of the second, said means acting only when the second shaft is locked against rotation, and means for locking the second shaft against rotation at intervals, said reversing means acting only when the second shaft is locked against rotation, substantially as set forth.

10. in a changeable exhibitor, a drum, a driving shaft carrying a pinionn a pair of pinions in driving connection with the drum and mounted for alternate engagement with the first named pinionn a lever for moving the pinions alternately into engagement with the first, a gear having pin and slot engagement with the lever, a second gear meshing with the first, means for driving the same intermittently and means for locking the reversible pinions in engaging position, sub- Stantially as set forth.

ll. 'in a changeable exhibitor, a driving shaft carrying a pinion, a pair of pinions connected to the drum and mounted for alternate engagement with the rst named pinion, a lever for moving the pinions alternate/ly into engagement with the first, a gear having pin and' slot engagement with the lever, a second gear meshing with the first, means for driving thesame intermit#` tently and means for locking the reversible pinions m engaging position comprising depressions in the second gear and a yieldable detent for engaging said depressions, sub-l stantially as set forth. y

l2. Tn a changeable exhibitor, a drum and means for driving the same to wind a web thereon comprising a driving shaft and reversing mechanism thereforv including a ratchet, a pawl engageabletherewith, a disk having lugs thereon to actuate the pawl and motor operated means to drive the disk, a

connection between said ratchet and saidl driving shaft whereby rotation of the disk causes said driven means to rotate the driving shaft, substantially asset forth.

13. in a changeable exhibitor a casing having opposed transparent sides, a `drum in the top portion of the casing, another drum in the bottom portion of the casing, a web extending between them and adapted to be wound from one drum to the other whereby both sides ofthe web are lexposed to the transparent sides at the same time,` and .means mounted in the casing at one end thereof for and reversibly automatically driving one of the drums, and means on the other drum constantly tending to'rewind the web thereon, substantially las set forth.

In witness whereof, I have hereunto set 4my hand and seal at Nashville, Tennessee,

this seventeenth day of February, A. nineteen hundred and twenty-one.

SAMUEL BATTLE LANGHAM. [n s] Witnesses:

LLOYD S. CuMMiNs, E. J. Booman. 

